diff --git a/.github/linters/sun_checks.xml b/.github/linters/sun_checks.xml
index f596335..4d9f089 100644
--- a/.github/linters/sun_checks.xml
+++ b/.github/linters/sun_checks.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!DOCTYPE module PUBLIC
-          "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
-          "https://checkstyle.org/dtds/configuration_1_3.dtd">
+        "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+        "https://checkstyle.org/dtds/configuration_1_3.dtd">
 
 <!--
 
@@ -44,44 +44,44 @@
   <property name="fileExtensions" value="java, properties, xml"/>
 
   <!-- Excludes all 'module-info.java' files              -->
-  <!-- See https://checkstyle.org/config_filefilters.html -->
+  <!-- See https://checkstyle.org/filefilters/index.html -->
   <module name="BeforeExecutionExclusionFileFilter">
     <property name="fileNamePattern" value="module\-info\.java$"/>
   </module>
 
-  <!-- https://checkstyle.org/config_filters.html#SuppressionFilter -->
+  <!-- https://checkstyle.org/filters/suppressionfilter.html -->
   <module name="SuppressionFilter">
-    <property name="file" value="${org.checkstyle.sun.suppressionfilter.config}" default="checkstyle-suppressions.xml" />
+    <property name="file" value="${org.checkstyle.sun.suppressionfilter.config}"
+              default="checkstyle-suppressions.xml" />
     <property name="optional" value="true"/>
   </module>
 
-
   <!-- Checks that a package-info.java file exists for each package.     -->
-  <!-- See https://checkstyle.org/config_javadoc.html#JavadocPackage -->
+  <!-- See https://checkstyle.org/checks/javadoc/javadocpackage.html#JavadocPackage -->
   <module name="JavadocPackage"/>
 
   <!-- Checks whether files end with a new line.                        -->
-  <!-- See https://checkstyle.org/config_misc.html#NewlineAtEndOfFile -->
+  <!-- See https://checkstyle.org/checks/misc/newlineatendoffile.html -->
   <module name="NewlineAtEndOfFile"/>
 
   <!-- Checks that property files contain the same keys.         -->
-  <!-- See https://checkstyle.org/config_misc.html#Translation -->
+  <!-- See https://checkstyle.org/checks/misc/translation.html -->
   <module name="Translation"/>
 
   <!-- Checks for Size Violations.                    -->
-  <!-- See https://checkstyle.org/config_sizes.html -->
+  <!-- See https://checkstyle.org/checks/sizes/index.html -->
   <module name="FileLength"/>
   <!--module name="LineLength">
     <property name="fileExtensions" value="java"/>
     <property name="max" value="120"/>
-  </module>                                       -->
+  </module>       Disabled online due to long lines-->
 
   <!-- Checks for whitespace                               -->
-  <!-- See https://checkstyle.org/config_whitespace.html -->
+  <!-- See https://checkstyle.org/checks/whitespace/index.html -->
   <module name="FileTabCharacter"/>
 
   <!-- Miscellaneous other checks.                   -->
-  <!-- See https://checkstyle.org/config_misc.html -->
+  <!-- See https://checkstyle.org/checks/misc/index.html -->
   <module name="RegexpSingleline">
     <property name="format" value="\s+$"/>
     <property name="minimum" value="0"/>
@@ -90,18 +90,16 @@
   </module>
 
   <!-- Checks for Headers                                -->
-  <!-- See https://checkstyle.org/config_header.html   -->
+  <!-- See https://checkstyle.org/checks/header/index.html   -->
   <!-- <module name="Header"> -->
   <!--   <property name="headerFile" value="${checkstyle.header.file}"/> -->
   <!--   <property name="fileExtensions" value="java"/> -->
   <!-- </module> -->
 
-  <!-- Enables @SuppressWarnings Support                -->
-  <module name="SuppressWarningsFilter"/>
   <module name="TreeWalker">
 
     <!-- Checks for Javadoc comments.                     -->
-    <!-- See https://checkstyle.org/config_javadoc.html -->
+    <!-- See https://checkstyle.org/checks/javadoc/index.html -->
     <module name="InvalidJavadocPosition"/>
     <module name="JavadocMethod"/>
     <module name="JavadocType"/>
@@ -114,7 +112,7 @@
     <module name="SuppressWarningsHolder"/>
 
     <!-- Checks for Naming Conventions.                  -->
-    <!-- See https://checkstyle.org/config_naming.html -->
+    <!-- See https://checkstyle.org/checks/naming/index.html -->
     <module name="ConstantName"/>
     <module name="LocalFinalVariableName"/>
     <module name="LocalVariableName"/>
@@ -126,22 +124,21 @@
     <module name="TypeName"/>
 
     <!-- Checks for imports                              -->
-    <!-- See https://checkstyle.org/config_imports.html -->
+    <!-- See https://checkstyle.org/checks/imports/index.html -->
     <module name="AvoidStarImport"/>
-    <module name="IllegalImport"/>
-    <!-- defaults to sun.* packages -->
+    <module name="IllegalImport"/> <!-- defaults to sun.* packages -->
     <module name="RedundantImport"/>
     <module name="UnusedImports">
       <property name="processJavadoc" value="false"/>
     </module>
 
     <!-- Checks for Size Violations.                    -->
-    <!-- See https://checkstyle.org/config_sizes.html -->
+    <!-- See https://checkstyle.org/checks/sizes/index.html -->
     <module name="MethodLength"/>
     <module name="ParameterNumber"/>
 
     <!-- Checks for whitespace                               -->
-    <!-- See https://checkstyle.org/config_whitespace.html -->
+    <!-- See https://checkstyle.org/checks/whitespace/index.html -->
     <module name="EmptyForIteratorPad"/>
     <module name="GenericWhitespace"/>
     <module name="MethodParamPad"/>
@@ -154,12 +151,12 @@
     <module name="WhitespaceAround"/>
 
     <!-- Modifier Checks                                    -->
-    <!-- See https://checkstyle.org/config_modifiers.html -->
+    <!-- See https://checkstyle.org/checks/modifier/index.html -->
     <module name="ModifierOrder"/>
     <module name="RedundantModifier"/>
 
     <!-- Checks for blocks. You know, those {}'s         -->
-    <!-- See https://checkstyle.org/config_blocks.html -->
+    <!-- See https://checkstyle.org/checks/blocks/index.html -->
     <module name="AvoidNestedBlocks"/>
     <module name="EmptyBlock"/>
     <module name="LeftCurly"/>
@@ -167,7 +164,7 @@
     <module name="RightCurly"/>
 
     <!-- Checks for common coding problems               -->
-    <!-- See https://checkstyle.org/config_coding.html -->
+    <!-- See https://checkstyle.org/checks/coding/index.html -->
     <module name="EmptyStatement"/>
     <module name="EqualsHashCode"/>
     <!-- <module name="HiddenField">
@@ -176,14 +173,14 @@
     </module>  Disabled online due to constructors-->
     <module name="IllegalInstantiation"/>
     <module name="InnerAssignment"/>
-    <!--  <module name="MagicNumber"/>  Disabled only online-->
+    <!-- <module name="MagicNumber"/> Disabled only online-->
     <module name="MissingSwitchDefault"/>
     <module name="MultipleVariableDeclarations"/>
     <module name="SimplifyBooleanExpression"/>
     <module name="SimplifyBooleanReturn"/>
 
     <!-- Checks for class design                         -->
-    <!-- See https://checkstyle.org/config_design.html -->
+    <!-- See https://checkstyle.org/checks/design/index.html -->
     <module name="DesignForExtension"/>
     <module name="FinalClass"/>
     <module name="HideUtilityClassConstructor"/>
@@ -194,17 +191,19 @@
     </module>
 
     <!-- Miscellaneous other checks.                   -->
-    <!-- See https://checkstyle.org/config_misc.html -->
+    <!-- See https://checkstyle.org/checks/misc/index.html -->
     <module name="ArrayTypeStyle"/>
+    <!-- <module name="FinalParameters"/> Disabled online due to constructors-->
     <module name="TodoComment"/>
     <module name="UpperEll"/>
 
-    <!-- https://checkstyle.org/config_filters.html#SuppressionXpathFilter -->
+    <!-- https://checkstyle.org/filters/suppressionxpathfilter.html -->
     <module name="SuppressionXpathFilter">
-      <property name="file" value="${org.checkstyle.sun.suppressionxpathfilter.config}" default="checkstyle-xpath-suppressions.xml" />
+      <property name="file" value="${org.checkstyle.sun.suppressionxpathfilter.config}"
+                default="checkstyle-xpath-suppressions.xml" />
       <property name="optional" value="true"/>
     </module>
-    <module name="SuppressionCommentFilter"/>
-    </module>
 
-</module>
+  </module>
+
+</module>
\ No newline at end of file
diff --git a/.github/workflows/lintChanges.yml b/.github/workflows/lintChanges.yml
index 129960c..7c402c1 100644
--- a/.github/workflows/lintChanges.yml
+++ b/.github/workflows/lintChanges.yml
@@ -18,7 +18,7 @@ jobs:
           fetch-depth: 0
 
       - name: Lint_Java
-        uses: github/super-linter@v5
+        uses: github/super-linter@v6
         env:
           VALIDATE_ALL_CODEBASE: true # lint all files
           VALIDATE_JAVA: true  # only lint Java files
diff --git a/src/test/java/io/tus/java/client/TestTusClient.java b/src/test/java/io/tus/java/client/TestTusClient.java
index 4cfe140..9bd1ec5 100644
--- a/src/test/java/io/tus/java/client/TestTusClient.java
+++ b/src/test/java/io/tus/java/client/TestTusClient.java
@@ -1,10 +1,5 @@
 package io.tus.java.client;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.net.HttpURLConnection;
@@ -21,6 +16,12 @@
 import org.mockserver.model.HttpRequest;
 import org.mockserver.model.HttpResponse;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
 /**
  * Class to test the tus-Client.
  */
@@ -32,7 +33,7 @@ public class TestTusClient extends MockServerProvider {
     @Test
     public void testTusClient() {
         TusClient client = new TusClient();
-        assertEquals(client.getUploadCreationURL(), null);
+        assertNull(client.getUploadCreationURL());
     }
 
     /**
@@ -63,14 +64,14 @@ public void testSetUploadCreationURL() throws MalformedURLException {
     @Test
     public void testEnableResuming() {
         TusClient client = new TusClient();
-        assertEquals(client.resumingEnabled(), false);
+        assertFalse(client.resumingEnabled());
 
         TusURLStore store = new TusURLMemoryStore();
         client.enableResuming(store);
-        assertEquals(client.resumingEnabled(), true);
+        assertTrue(client.resumingEnabled());
 
         client.disableResuming();
-        assertEquals(client.resumingEnabled(), false);
+        assertFalse(client.resumingEnabled());
     }
 
     /**
@@ -248,9 +249,9 @@ public void testResumeUpload() throws ResumingNotEnabledException, FingerprintNo
     /**
      * Test Implementation for a {@link TusURLStore}.
      */
-    private class TestResumeUploadStore implements TusURLStore {
+    private final class TestResumeUploadStore implements TusURLStore {
         public void set(String fingerprint, URL url) {
-            assertTrue("set method must not be called", false);
+            fail("set method must not be called");
         }
 
         public URL get(String fingerprint) {
@@ -258,12 +259,12 @@ public URL get(String fingerprint) {
 
             try {
                 return new URL(mockServerURL.toString() + "/foo");
-            } catch (Exception e) { }
+            } catch (Exception ignored) { }
             return null;
         }
 
         public void remove(String fingerprint) {
-            assertTrue("remove method must not be called", false);
+            fail("remove method must not be called");
         }
     }
 
@@ -513,14 +514,14 @@ public void testRemoveFingerprintOnSuccessDisabled() throws IOException, Protoco
         store.set("fingerprint", dummyURL);
         client.enableResuming(store);
 
-        assertTrue(!client.removeFingerprintOnSuccessEnabled());
+        assertFalse(client.removeFingerprintOnSuccessEnabled());
 
         TusUpload upload = new TusUpload();
         upload.setFingerprint("fingerprint");
 
         client.uploadFinished(upload);
 
-        assertTrue(dummyURL.equals(store.get("fingerprint")));
+        assertEquals(dummyURL, store.get("fingerprint"));
 
     }
 
@@ -548,7 +549,7 @@ public void testRemoveFingerprintOnSuccessEnabled() throws IOException, Protocol
 
         client.uploadFinished(upload);
 
-        assertTrue(store.get("fingerprint") == null);
+        assertNull(store.get("fingerprint"));
 
     }
 }